Abstract:Cleft lip nasal deformity is a common and complex congenital facial anomaly that involves multiple anatomical structures, including the nasal ala, columella, and nasal base. This deformity not only causes obvious facial disfigurement but also usually accompanies multiple functional impairments, such as poor nasal ventilation and oronasal fistula, seriously affecting the physical and mental health of patients. The complexity of the deformity poses considerable challenges for repair and reconstruction. With the in-depth study of nasal fine anatomy, the progress in imaging assessment techniques, and innovations of plastic surgery repair concepts and surgical methods, the comprehensive diagnosis and treatment of cleft lip nasal deformity have achieved significant progress. This article systematically reviews the anatomical characteristics of cleft lip nasal deformity, the clinical value of preoperative non-surgical interventions in infancy, and focuses on the technical advancements and strategy selection of one-stage nasal-lip synchronous repair and two-stage comprehensive rhinoplasty. The aim is to provide scientific, standardized, and personalized sequential treatment references for clinical practice, and to promote the development of diagnosis and treatment techniques for cleft lip nasal deformity.